Browsers use HTTP to retrieve Instant Messenger resource files from
the Web server. Once retrieved, the browser reads the HTML and displays the
contents of the files. Client-to-server communication can take place over
HTTP/HTTPS/SOCKS proxy. Also, HTTPBIND is a server component (that uses the
HTTP protocol) through which browser-based XMPP clients can communicate with
the Instant Messaging server.

Instant Messaging 7.2 is an XMPP client/server solution, able to communicate
with XMPP-compliant servers, clients, and gateways. Gateways are available
in the open-source community to enable communication between Instant Messaging
server and AOL, Yahoo, and other instant messaging systems.